闭壳核具有球对称性。
采用前驱体微球法制备闭孔聚酰亚胺泡沫，并对其吸声性能进行了研究。
The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acoustic absorption properties were tested.
和灭齐球经济一体化入程的出无续加快，人们无时无刻出无感触感染到时迟期变革闭于经济运行和企业管理所收生的淡遥影响。
As the global economic integration advancement speeds up, we constantly feel the profound influence exerted on the economic movement and enterprise administration by time transformation.
方法用血管内球囊或弹簧圈闭塞椎动脉治疗9例颅内后循环不可夹闭动脉瘤。
Methods 9 patients with posterior circulation intracranial unclipped aneurysms were treated with detachable balloons or GDCs to occlude proximal vertebral artery of aneurysms.
氧化铝空心球ALUMINABUBBLE 氧化铝空心球是由电熔法制得的空心球状隔热材料 。它的特点是质轻闭孔耐高温。
The alumina bubble is a hollow spherulitic heat-insulating material, which is made by electro-melted method. It is noted for its lightweight, heat-resistance, and close pore.
氧化铝空心球ALUMINABUBBLE 氧化铝空心球是由电熔法制得的空心球状隔热材料 。它的特点是质轻闭孔耐高温。
The alumina bubble is a hollow spherulitic heat-insulating material, which is made by electro-melted method. It is noted for its lightweight, heat-resistance, and close pore.
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